2-7
TABLE 2-2 9-Pin POSITRONICS TYPE CONNECTOR FUNCTIONS
PIN
NO
Two Wire Line Interface Board
P/N's 943180-1
PIN
NO
Four/Two Wire Line Interface Board
P/N 923051-1
A,B
J
H
F
K
E
D,C
2 Wire Remote TX/RX Audio(600
Ω
)
Ground
+12 Vdc Output
Squelch
External PTT
Not Connected
Not Connected
A,B
D,C
J
H
F
K
E
4 Wire Remote TX Audio Line or
2 Wire Rx/Tx Audio (600
Ω
)
4 Wire Remote RX Audio (600
Ω
)
Ground
+12 Vdc Output
Squelch
External PTT
Not Connected
2.3.1
Two/Four Wire Remote Control Board P/N 923051-1
Provides remote control base station operation on 2 wire or 4 wire, 600 ohm lines. This board can
be configured to key the transmitter using a 2175 Hz tone (2380 Hz upon request), plus/minus DC
Voltages, ground keying and internal or external current loop keying. Transmit and Receive audio
is user selectable for two wires or four wires. Crystals for tone frequencies other than 2175 Hz or
2380 Hz may be obtained by special order.
See Table 2-3 for jumper settings and their functions. See Figure 2-3 for location of jumpers
referred to in the Table 2-3. Pins are numbers increase as you go from top to bottom or left to
right on the connector.
2.3.2
Two Wire Remote Control Board P/N 943180-1
Provides remote control Base Station operation on 2 wire 600 ohm lines. Two wire Line Interface
board with EIA multi-tone, standard 2175Hz continuous tone, DC keying of ground keying over
audio lines. The multi-tone keying format consists of a high level 2175 tone followed by a 1950 Hz
guard tone and then a low level 2175 Hz continuous tone is utilized to key the transceiver. This
board will also support 15mA current loop or ground keying. Refer to Figure 2-4 for jumper
locations to set functions and line level adjustments for this board. Summary of jumper settings
follow. Pins are numbers increase as you go from top to bottom or left to right on the connector.
Set
J1
for
ST
(standard 2175Hz continuous) Tone keying or
for
EIA
(multi-tone keying format).
Set J2
for Tone keying function
ON
(left jumper position) or
OFF
(right jumper position).
Set
J3
for Time out timer
OFF
(left jumper position) or
ON
(right jumper position).
See Table 2-4 for jumper settings and their functions. See Figure 2-3 for location of jumpers and
left/right orientation referred to in the Table 2-4.
